KR20000071758A - Vibrational conveyer - Google Patents

Abstract

The present invention relates to a vibration conveyor.

The present invention was developed to provide a vibration conveyor that can reduce noise, increase acceleration at low cost, and can be easily changed. As a solution, a trap supported by the support to be vibrated in the horizontal direction, and the trap. In the vibration conveyor consisting of an excitation mechanism for generating an excitation force which vibrates at a small acceleration in the conveying direction of the object and at a large acceleration in the opposite direction of the conveying direction, the vibrating mechanism can be programmed to be controllable. And a crank mechanism for converting the rotational driving force of the rotational driving source into a reciprocal linear driving force, and by controlling the rotational driving source, the acceleration and deceleration of the reciprocating linear movement of the crank mechanism can be arbitrarily adjusted.

Description

Vibratory Conveyor

The present invention relates to a vibration conveyor.

Fig. 24 schematically shows this type of vibration conveyor of the conventional example, and in the figure, the trap 41 is provided on the support 44 by a guide roller 42 to move left and right. A linear motor 43 is attached to the bottom of 41. An inertia (45) or counter weight is attached to the primary side or secondary side. This is a configuration that is relatively movable relative to the primary side or the secondary side. Giving a driving command as shown in FIG. 23 close to the sawtooth wave on the primary side of the linear motor 43 causes the trap 41 to vibrate with a small acceleration in the direction of conveyance of the object and a large acceleration in the reverse direction. As a result, the effect of eliminating defects and removing noise is reduced compared to the vibrating conveyor which transfers an object by repeating the conventional small jump movement. However, the configuration of the linear motor 43 is complicated and the apparatus cost is high. .

In view of the problems described above, the applicant has a problem of providing a vibration conveyor having a simple structure and low device cost. The present invention provides a trap supported by vibration and a small acceleration in the conveying direction of the object. In the vibration conveyor consisting of an excitation mechanism for generating a vibrating force to vibrate with a large acceleration in the opposite direction to the direction, the vibration mechanism is a screw rod coupled to the servo motor and the rotary shaft of the servo motor, the both ends are supported by the bearing member ( rod) and a ball screw screwed to the threaded rod, wherein the trap is fixed to the ball screw side or the servomotor side. 324018).

However, in the above-described apparatus, since the ball screw is used, there is a backlash and the like, the noise is large, there is a problem in durability, and the acceleration cannot be taken large.

On the other hand, Japanese Unexamined Patent Application Publication No. 58-197112 discloses a conveyor as shown in Figs. 25 and 26 as a conveyor for reducing noise and improving durability. That is, in the drawing, the conveyor trap 1 'is formed in a U-shaped cross-sectional shape having a bottom wall 1a' elongated in the horizontal direction and parallel sidewalls 1b ', 1b', and the base 2 '. It is supported in the longitudinal direction through the support member 3 'provided on the top. The support member 3 'includes a support 4 fixed on the base 2' and a guide roller 6 'rotatably supported through the bearing 5' on top of the support 4 '. On the guide roller 6 ', a guide portion 7' fixed to the lower surface of the conveyor trap 1 'is mounted, and the conveyor trap 1' is capable of reciprocating.

Moreover, the reciprocating drive device 8 'which reciprocates the conveyor trap 1 is arrange | positioned on the base 2'. This reciprocating drive device 8 'can comprise a servo motor as a main part, and in this example, the coupling 11' is coupled to the output shaft 10 'of the servo motor 9' that can be rotated forward and backward. coupling the reducer 12 ', and the crank arm 14' mounted to the crankshaft 13 'is connected to the crank arm 14' via a pin 15 '. One end is pivotally mounted, and the other end of the connecting rod 16 'is attached to the bracket 17' fixed to the lower surface of the conveyor trap 1 'via a pin 18'. The servomotor 9 'is made to be capable of high speed rotation and low speed rotation, so that the conveyor trap 1 can be advanced forward and low speed retreat.

The servomotor 9 'is driven to rotate the crank arm 14' counterclockwise in FIG. At this time, when the crank arm 14 'is rotated at a low speed within the range of 180 ° indicated by B' while rotating at a high speed within the range of 180 ° indicated by A ', the conveyor trap 1' is connected through the connection 16 '. Is fast forward and slow backward. During the high speed forward movement of the conveyor trap 1 ', the inertial force is increased to the conveyed object to be greater than the maximum stopping friction force, and the conveyed object is perturbed on the bottom wall 1a' of the conveyor trap 1 'to advance a predetermined distance. Let's do it. In the low speed retraction of the conveyor trap 1 ', the conveyed object remains stationary in the advanced position. In this way, the conveyed object is conveyed gradually in the X 'direction by the high speed forward and the low speed retraction of the conveyor trap 1'. High speed forward and low speed retraction of the conveyor trap 1 'are performed by sending detection signals, such as a proximity switch (not shown), to a drive device (not shown) of the servomotor 9'.

In addition, since the conveyed object perturbs the bottom wall 1a of the conveyor trap 1 ', that is, the conveying surface, and does not collide with the conveying surface, no noise is generated and the conveyed object is conveyed extremely smoothly without damage.

However, it is considered that there are provided a proximity switch, although not shown in the above publication and, in proximity to the front and rear ends of the trap (1), each proximity switch P _1, P ₂ is installed at a position as shown by a broken line. It is considered that the servomotor 9 is rotated at high speed and at low speed by this on and off. In such a configuration, not only the arrangement of the proximity switch is required, but also the damage caused by the collision with the trap 1 'is concerned.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a vibration conveyor capable of catching a large enough acceleration without having to use a proximity switch and having low cost, low noise, and durability.

1 is a side view of a vibration conveyor according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line [2]-[2] of FIG. 1.

3 is a sectional view taken along the line [3]-[3] of FIG.

4 is a sectional view taken along the line [4]-[4] of FIG.

5 is a diagram showing the temporal change of the rotational phase and the rotational speed (rpm) of the AC servomotor of the present invention, where A is the rotational phase and B is the rotational speed.

6 is a schematic view of the first embodiment of the present invention.

It is a schematic diagram which shows the modification of 1st Embodiment of this invention, and is a figure which shows a stroke variable mechanism.

8 is a side view according to a second embodiment of the present invention.

9 is a side view of a vibration conveyor according to a third embodiment of the present invention.

FIG. 10 is a sectional view taken along the line [10]-[10] of FIG. 9.

FIG. 11 is an enlarged cross-sectional view in the [11]-[11] direction of FIG. 8.

12 is a partially broken side view of the vibration conveyor according to the fourth embodiment of the present invention.

It is a front view by 4th embodiment of this invention.

14 is a sectional view taken along the line [14]-[14] of FIG.

FIG. 15 is a plan view cut away and showing a part of the trap of FIG. 12. FIG.

FIG. 16 is a plan view illustrating a part of the trap mounting frame of FIG. 12 removed. FIG.

FIG. 17 is a plan view from which the motor mounting plate of FIG. 12 is removed, that is, a [17]-[17] line direction plan view in FIG. 12.

18 is a partially broken side view according to the fifth embodiment of the present invention.

FIG. 19 is a plan view illustrating a part of the trap cut in FIG. 18. FIG.

20 is an enlarged cross-sectional view of a main part of FIG.

FIG. 21 is a plan view showing an operation in an enlarged cross-sectional view of a main part of FIG. 18; FIG.

FIG. 22 is a plan view showing another action in the enlarged cross-sectional view of a main part of FIG.

Fig. 23 is a time chart of speed commands supplied to the primary side of the linear motor of the vibration conveyor of the conventional example.

It is a schematic diagram of the vibration conveyor which uses the linear motor of the prior art to which the said command is applied as a drive source.

25 is a side view of another conventional vibration conveyor.

Fig. 26 is a partially broken plan view.

* Description of the sign *

1, 12: Trap 5: Servo motor

6: eccentric ring (偏心 輪) 7: crankshaft

8: pivot mounting wheel 50, 100: vibration conveyor

51: trap 60A: trap mounting frame

60B: Mount 60C: Motor Mount

H: Controller M: Motor

W: Power Conversion Mechanism

The above object is to provide a trap which is vibrated in a horizontal direction by a support, and an excitation mechanism for generating an excitation force that vibrates the trap with a small acceleration in the direction of transport of the object and a large acceleration in the reverse direction of the transport direction; In the vibration conveyor consisting of, the excitation mechanism is provided with a rotationally controllable drive source and a power conversion mechanism for converting the rotational drive force of the rotary drive source to a reciprocating linear drive force, the power conversion by the control of the rotational drive source. It is solved by a vibration conveyor characterized in that the acceleration and deceleration of the reciprocating linear motion of the mechanism can be arbitrarily adjusted.

Embodiment of the invention

1 to 4 show a vibration conveyor according to the first embodiment of the present invention, the U-shaped long trap 1 having a cross section is formed by a pair of struts 3 before and after and on the base 2. It is supported by the reciprocating material in the horizontal direction from side to side through a roller (4; roller).

The rotation drive source is an AC servomotor (5), and an eccentric wheel (6) is mounted on the rotational shaft, and a pivot mounting bearing (8) is mounted on the front end of the crankshaft (7). It is attached to the trap 1 through this.

According to this embodiment, the crankshaft 7 consists of leaf springs 10a and 10b which are superimposed at two predetermined intervals, and both ends thereof are formed on the outer ring of the eccentric wheel 6 and the pivot mounting bearing 8. The plate members 6a and 8a which are integrally mounted are sandwiched and fixed.

According to this embodiment, the AC servomotor 5 is digitally controlled as a rotatable motor (motor) which can be programmed to be controlled. In order to obtain a waveform as shown in Fig. 23, a region of low speed and high acceleration at a rotational phase of 180 ° to 360 ° is determined at a rotational phase of 0 ° to 180 °. For this reason, the controller H is connected to the AC servomotor 5.

Although the 1st Embodiment of this invention is comprised as mentioned above, this operation | movement is demonstrated next.

The AC servomotor 5 is given a speed command of a waveform as shown in FIG. 23 from the controller H, but is supplied as a digital control signal. As a result, the AC servomotor 5 rotates at low speed between 0 ° and 180 ° as shown in FIGS. 5A and 5B during one rotation, and rotates at high acceleration between 180 ° and 360 °. Do it. Repeatedly, the rotary motion is converted into a linear motion by the crank mechanism, so that the trap 1 vibrates at a low speed to go and at a high acceleration to come. Therefore, the article is conveyed in the direction of arrow A in the trap 1 as described in the prior art.

The crankshaft 7 reciprocates by the eccentricity from the shaft 5a of the servomotor of the eccentric wheel 6, but at this time, the crankshaft between the eccentric wheel 6 and the pivot mounting wheel 8 When a transverse force is applied to (7), the shaft (7) is now made by leaf springs (10a, 10b), so that the eccentric wheel (6) and the pivot mounting wheel (8) with a curved motion This prevents the transfer of stress, such as breaking it.

FIG. 6 conceptually illustrates the vibration conveyor of FIG. 1, with the eccentric ring 6 being indicated by L. FIG. It is pivotally attached to the shaft center 5a of the servomotor 5 at the lower end, and is pivotally attached to the shaft end of the crankshaft 7 at the upper end. That is, the distance r between these mounting points represents an eccentric radius, and the trap 1 vibrates by the double stroke. Of course, 180 ° rotates at low speed, then 180 ° rotates at high acceleration.

In addition, in the above description, although the saw-tooth wave of the grade shown in FIG. 23 was used as a speed command, actual rotation of the servomotor 5 is shown in FIG. 5A, 5B, and rotational position, ie, rotational phase, The derivative value, that is, the speed is a low speed rotation between 0 and 180 degrees and the time t ₁ , and the derivative value is large at the next time t ₂ , that is, at a 180 degrees to 360 degrees rotation, and thus the high speed rotation. The command is given to move to the lower speed immediately at the next rotational phase, but in reality there is a mechanical delay, and there is a time delay between t ₂ and t ₃ , and during that time, the dead point is. The same applies to the following rotational phases. The rotational speed (rpm) as shown in Figure 5B and Figure 23 is a speed command of time t is less variation gradient up to ₁ as shown in, and the next time t ₂ gradient is large, that is, speed reduction by high speed . However, after the corresponding time t ₂ elapses on a regular basis, the next low speed rotation is not immediately performed. As described above, the dead center is between the times t ₂ and t ₃ . In this way, even if the speed instruction is not faithfully adhered, the article is smoothly conveyed in the predetermined direction in the trap 1. Moreover, even if there is a stop time such as t ₂ to t ₃ without immediately shifting from high speed rotation to low speed rotation or low speed rotation to high speed rotation, there is no problem in conveying the article. The same applies to the transition point from the high acceleration rotation phase to the low speed rotation phase. In addition, the stopping time of t ₂ to t ₃ can be made small enough to be regarded as 0 sufficiently. It is exaggerated in the city.

Fig. 7 conceptually shows a mechanism for changing the magnitude of the stroke of the reciprocating motion of the crankshaft 7 in such a crank mechanism. Three pivot mounting points P ₁ , P ₂ , and P ₃ are provided on the lever L ', and the large, medium and small amplitudes can be obtained by pivoting one end of the crankshaft to each of them. have. In reality, the distance (eccentric distance) between the shaft center of the eccentric wheel 6 and the shaft 5a of the servomotor 5 is shown.

In FIG. 6 and FIG. 7, the eccentric wheel 6 is conceptually illustrated. However, of course, the lever L or L 'as shown in place of the eccentric wheel 6 is pivotally attached to the axis of the servomotor at its lower end. It is clear that it may be a crank which makes it possible to attach the pivot mounting position to the upper end or the middle and the lower end. Similarly, in FIG. 6 and FIG. 7, the front end of the crankshaft 7 is pivotally mounted on the mounting member Q. However, of course, the bottom face of this trap may be faced and pivotally mounted. The pivot mounting bearing 8 shown in FIG. 1 may be used for this pivot mounting. 6 and 7, the length of the mounting mechanism Q and the crankshaft is exaggerated, and the dimensional ratio is not accurate.

Fig. 8 shows a vibration conveyor according to a second embodiment of the present invention. The parts corresponding to Fig. 1 are designated by the same reference numerals, and detailed description thereof will be omitted.

That is, in this embodiment, the base 20 is provided below the trap 12, and this is the wheel 23 on the guide block 21 (shown in detail in FIG. 11) which has an arc-shaped guide surface. It is supported against the ground through the trap, and the trap 12 is supported by the reciprocating motion material in the horizontal direction through the same wheel 23 on the upper surface of the vertical end of the base 20. Furthermore, the counterweight 30 is integrally fixed to the frame 20, and the total weight of the frame side is increased. As a result, the trap 12 reciprocates in response to the speed command as shown in FIG. 23 as in the first embodiment, but the base 20 reciprocates with a phase difference of 180 degrees in response to this reaction force. The amplitude is inversely proportional to the magnitude of the total weight including the counterweight 30. Therefore, with a large weight, the amplitude can be made small and the vibration force transmitted to the ground can be zero (zero) or small.

9 and 10 show a vibration conveyor according to a third embodiment of the present invention. Parts corresponding to the above embodiments will be denoted by the same reference numerals and detailed description thereof will be omitted.

That is, according to this embodiment, the trap 12 is supported by the wheel 32 to the support | pillar 31 supported on the ground, and the guide surface of this wheel 32 is circular arc-like guide surface like 2nd Embodiment. It is a guide block 33 having. In addition, at the bottom of the trap 12, a pair of hanging members 40 (front and rear) is mounted through the mounting member 35, and as shown in FIG. 10, the ball G; V) is formed, and the flange portion 20a of the base 20 is engaged with the perturbation material. Therefore, the trap 12 and the base 20 are not only subjected to the movement of guiding each other in a linear direction, but the base 20 is suspended with respect to the trap 12.

Also in this embodiment, transmission of the vibration force with respect to the ground can be prevented like 2nd Embodiment.

12 to 17 show the vibration conveyor 50 according to the fourth embodiment of the present invention, but the linear trap 51 is attached to the trap mounting frame 60A described later, which depends on the mount 60B. The motor mounting table 60C which is supported by the furnace vibrating material and installs the motor M under the trap 5 is supported by the vibrating material left and right by the mount 60B.

The trap mounting frame 60A is fixed to both side walls of the trap 51 by side plates 52a and 52b mounted by bolts 55 and welded thereto, as indicated in FIG. Each frame member is composed of a frame body woven. The frame is planarly rectangular and has frame members 53a and 53b having long sides, fixed to both ends thereof, and frame members 54a and 54b having short sides and both frame members 53a and 53b. Intermediate frame members 55a and 55b are connected to each other. In addition, the intermediate frame member 55b is reinforced by the intermediate frame member 55c having the same shape in order to receive the crank driving force as described later.

12 and 15, the guide members 56a and 56b for guiding the horizontal rollers 70 are further provided between the frame members 54a and 54b having short sides and the intermediate frame members 55a and 55b. Is formed as a left and right pair in Fig. 15, and furthermore, the guide rail members 57a and 57b for guiding the rollers 69, which will be described later, between the frame members 53a and 53b which form a long side. Is mounting. The mounting frame 60A is firmly constituted by the above-described frame members, which are firmly fixed to the trap 51 through side plates 52a and 52b fixed to both side walls of the trap 51. have.

As described above, the mount 60B supports the trap 51 with vibration materials from side to side, and connects the pair of posts 61a, 61b in front and rear, right and left, and the lower end thereof in FIGS. 12 and 13. Members 62a, 62b, furthermore, connecting members 63a, 63b for connecting the lower ends of the front and rear ends, as shown in FIG. 13, and intermediate connecting members 64a, 64b for connecting the middle portions, and the intermediate connecting members 64a. And 64b), and intermediate connecting members 65a and 65b for connecting back and forth as shown in FIG.

Needle members 67a and 67b are fixed to the upper ends of the struts 61a and 61b, as shown in Figs. 12 and 13, and a pair of bearing members 68 are fixed to the vertical rollers. 69) is supported by the rotating materials. This is in pressure contact with the guide rail members 57a and 57b fixed to the trap mounting frame 60A as shown in FIG. Thereby, the trap 51 is supported by the vibration material to the left and right (arrow A) in FIG.

The roller mounting portion 71 is fixed to the middle of the needle members 67a and 67b, as shown in FIG. 13, and a horizontal roller 70 whose axis is vertical is supported. This defines the movement of the trap 51 by placing its outer peripheral surface on the guide members 56a and 56b fixed to the trap mounting frame 60A as indicated in FIGS. 13 and 15.

Next, the motor mounting table 60C will be described. It is located between the trap 51 and the intermediate connecting members 64a and 64b, but as specified in Figs. 15 to 17, this also constitutes a frame structure, is substantially rectangular in plan view, and forms a long side frame member 72a. 72b) and frame members 73a and 73b which form short sides joining both ends thereof. The upper end of the motor M is inserted and fixed through the motor mounting plate 74. In the right side of FIG. 12, the reinforcing plate 75 forms a long side by bolts to reinforce the frame structure. It is fixed to 72a, 72b.

On both ends of the connecting members 64a and 64b of the mount 60B, the bearing member 68 is mounted to the front, rear, left and right as shown in FIG. 13, and the vertical roller 69 is pivoted by the rotational material. It is press-contacted to the guide rail member 70 fixed to the frame members 72a and 72b forming the long side of 60C. That is, the motor mounting member 60C is supported by the roller 69 together with the motor M, and is provided with vibration material left and right in FIG.

In the middle of the frame members 72a and 72b, a pair of front, rear, left and right guide plates 80a and 80b that vertically descend downward as shown in FIG. 13 is fixed, whereby the mount 60B as shown in FIG. Although the pair of horizontal rollers 67a 'and 67b' are supported by the roller mounting plate 66 in the middle part of the connecting members 64a and 64b of the rotary member, this is supported by the guide plates 80a and 80b. It always receives and regulates the movement of the trap 51. The crank arm K is fixed to the tip of the rotation shaft d of the motor M, and the eccentric wheel W is supported by the rotational material eccentrically with the rotation shaft d, and coupled thereto. The tip of the driving rod R is pivotally mounted to the c-shaped pivot mounting member 82 as shown in FIG. 14 through the pin p. This pivot mounting member 82 is fixed to the above-mentioned reinforcing intermediate frame member 55c of the trap mounting frame 60A. Therefore, the driving force of the rod R is the frame members 53a and 53b which form a long side in the intermediate frame members 55b and 55c and FIG. 15 fixing them, and the side plates 52a and 52b fixed thereto. The trap 51 is configured to drive left and right through the trap. The axis d of the motor M is on the center line C-C of the trap 51 as shown in FIG.

The configuration of the fourth embodiment of the present invention has been described above, and the operation will be described next.

The motor M is given a speed command as shown in FIG. 23 as in the above-described embodiment. As a result, the driving rod performs a straight linear oscillation with slow forward and retreat with a rotational phase as shown in Figs. 5A and 5B. That is, in FIG. 12, the trap 51 moves forward with a small acceleration to the left and a large acceleration to the right, and the object in the trap 51 moves forward while perturbing to the left in FIG. 12. Further, at this time, the motor mounting table 60C is inversely proportional to the weight of the entire trap mounting frame 60A fixed on the trap 51 side and the weight of the motor mounting table 60C and the entire motor M. ) Is moved back and forth in small strokes from side to side. As a result, the movement of the trap 51 side and the motor M side is performed 180 degrees in the horizontal direction so that the mount 60B is offset and becomes zero. Moreover, according to the embodiment of the present invention, the trap 51 oscillates from side to side by the rotation of the roller 69 on the mount 60B, but the guide roller moves the horizontal roller 70 as shown in FIG. 15 between the rollers. By taking up by 56a, 56b, side drift can be prevented and the trap 51 can perform linear motion without a problem. In addition, the motor mounting table 60C below it is also supported on the vertical roller 69 on the intermediate connecting members 64a and 64b of the mount 60B and vibrates from side to side. Guided by the pair of horizontal rollers (67a ', 67b') by the guide plate (80a, 80b) is also exactly linear movement. Therefore, reaction force to the ground by the above-mentioned action and reaction can be ideally set to zero.

15, the vibration conveyor 50 according to the embodiment of the present invention is configured symmetrically with respect to the central axis CC of the trap 51, that is, the axis of the rotation axis d of the motor M is the center. Although the drive rod R is linearly moved by the rotational movement of the crank arm K on the axis CC, the imbalance force in the transverse direction with respect to the trap 51 can be made extremely small.

According to the first embodiment, the rotation axis of the motor 5 is in the horizontal direction, and the crank rod 7 gives the component up and down with respect to the trap 1, but according to the present embodiment, the component in the up and down direction is set to zero. Can be. Moreover, since the crank arm K and the crank rod R are accommodated in the trap mounting frame 60A, it can be set as a compact structure as a whole.

18 to 22 show a vibration conveyor according to a fifth embodiment of the present invention, which is indicated by 100 as a whole. In addition, the same code | symbol is attached | subjected to the part corresponding to 4th Embodiment, and the detailed description is abbreviate | omitted.

According to this embodiment, as shown in FIG. 19, in the trap mounting frame 60A, the drive mounting members 85a and 85b are mounted between the frame members 53a and 53b, and are fixed as shown in FIG. The power conversion mechanism W is attached through the member 93. That is, the motor M is fixed to the frame member 72b via the motor mounting plate 73 as in the above-described embodiment, but the bolt B is connected to the second branch of the crank arm K on the rotation shaft d. ), The eccentric shaft 86 is fitted to the other side Ka, and fixed with a nut N, and the spherical forming member 87 is attached to this shaft end. It is received by bearing ring 88, which is held in the position shown by push ring 94. As shown in FIG. As shown in Fig. 21, the bearing ring 88 is held on the outer circumferential surface of the rectangular slide body 89, but as shown in Fig. 21, rectangular slide pieces 90a and 90b are provided at the other edges. A large number of jades 91 are held in a ball formed by bolts and formed on the outer surfaces of the slide pieces 90a and 90b, which is indicated by a pair of waistbands 92a. And perturbation material are fitted into the linear sphere formed by 92b). The eccentric shaft 86 is rotatable relative to the slide body portion in the bearing ring 88 and the spherical forming member 87.

Next, the operation of the present embodiment will be described. The crank arm K rotates around the rotation axis d by the rotation of the motor M, and the eccentric shaft 86 rotates around the rotation axis d. Thereby, as shown by the solid line in FIG. 21, the slide main body 89 fits to the strip | belt-shaped member 92a, 92b also shown by the solid line, and when the shaft d rotates about 90 degrees from this, the crank arm K ) Takes the position as shown by the dashed-dotted line. Thereby, the eccentric shaft 86 is in the position shown by the dashed-dotted line, or the slide main body 89 moves to the position shown also by the dashed-dotted line by this. That is, it is guided by a pair of strip | belt-shaped member 92a, 92b, and moves to the left side in drawing. In addition, the strip | belt-shaped members 92a and 92b at this time are also shown with the dashed-dotted line, and the trap 51 is moved downward in FIG.

Moreover, the slide main body 89 takes the position shown by the dashed-dotted line by rotating about 90 degrees from the position shown by the solid line in FIG. 21 to the position shown by the dashed-dotted line. Thereby, the strip | belt-shaped member 92a, 92b which fits is sent upward. As described above, the trap 51 moves in the same manner as in the above embodiment on the left and the right in FIG. 18. According to this embodiment, the power conversion mechanism W is much more compact than the above-described embodiment as also indicated in FIG. Since the force is applied only to the object conveying direction of the trap, the object can be conveyed smoothly by ideal linear vibration.

As mentioned above, although embodiment of this invention was described, of course, this invention is not limited to these, A various deformation | transformation is possible according to the technical idea of this invention.

For example, in the above first to fourth embodiments, the rotational force of the AC servomotor is directly transmitted to the crank mechanism. Furthermore, in order to increase the torque, the crank mechanism may be transmitted to the crank mechanism. The same applies to the fifth embodiment, and the power conversion mechanism W may be attached to the output shaft by coupling the speed reducer to the rotation shaft d of the motor M. FIG.

In addition, although the AC servomotor was used as a servomotor as said embodiment, you may use a DC servomotor instead.

In addition, although the speed command as shown in FIG. 23 was given to the AC servomotor 5 as the above embodiment, you may give it more differentiation, ie acceleration command instead. In addition, it may be integrated and supplied to the AC servomotor as a position command. In other words, the waveform may be such that the acceleration is small for the forward of the trap and the acceleration is large for the backward.

In the above embodiment, 0 ° to 180 ° is used as the low speed, and 180 ° to 360 ° is the high acceleration. However, this angle range is not limited to this, but 0 ° to 200 ° is used as the low speed rotation and 200 °. It is good also as a high acceleration rotation of -360 degrees. Or vice versa. However, the conveying direction of the article on the trap is reversed.

In the first embodiment described above, the crankshaft 7 is composed of two leaf springs 10a and 10b. Alternatively, the crankshaft 7 may be replaced with one leaf spring. Or it may be a simple rod-shaped member.

Alternatively, as shown in FIG. 11, the wheels 23, i.e., the traps 1 and 12, which provide the vertical wall portion 21a on the outer side of the block 21 having an arcuate guide surface, are perturbed in the horizontal direction. It may be possible. In addition, any means for linearly guiding may be used. In the above-mentioned embodiment, such a vertical wall part is shown by the dotted line.

Moreover, although the crank mechanism and W of 5th Embodiment were demonstrated as a power conversion mechanism which converts rotation into a reciprocation motion, it is not limited to this, For example, you may use a cam mechanism.

As described above, according to the vibration conveyor of the present invention, operation can be performed quietly, and various acceleration and low speed modes can be easily obtained at low cost.

Claims (9)

A vibrating conveyor comprising a trap supported by the support to be vibrated in the horizontal direction, and an excitation mechanism for generating the vibrating force to vibrate the trap with a small acceleration in the direction of transport of the object and with a large acceleration in the reverse direction of the conveying direction. In The excitation mechanism includes a programmable rotationally controllable drive source and a power conversion mechanism for converting the rotational drive force of the rotary drive source into a reciprocal linear drive force, the control of the rotational drive source of the reciprocal linear motion of the power conversion mechanism. Vibration conveyor characterized in that the acceleration and deceleration can be arbitrarily adjusted. The vibration conveyor according to claim 1, wherein the rotation axis of the rotation drive source is vertical and is on an almost central axis of the trap. The crank mechanism according to claim 1 or 2, wherein the rotation driving source is fixed to a base supported on the ground so as to be vibrated in a horizontal direction by a supporting means, wherein the power conversion mechanism is a crank mechanism and the tip portion of the crank shaft of the crank mechanism is Vibration conveyor, characterized in that attached to the trap. The linear guide means is provided between the trap and the base fixing the rotary drive source, and the base is suspended from the trap by the guide means. The power conversion mechanism is a crank mechanism, and the tip end of the crankshaft of the crank mechanism is mounted to the trap. The vibration conveyor according to any one of claims 1 to 4, wherein the rotary drive source comprises a rotary motor and a speed reducer for reducing the rotational speed of the rotary motor. The vibration conveyor according to any one of claims 3 to 5, wherein the crank mechanism has a stroke adjusting mechanism for varying the stroke of the linear motion. The said support body is equipped with the wheel supported by the rotating material on the ground and one side of the said trap, and the arc-shaped guide rail which is fixed to the other side and guides the said wheel. Vibration conveyor characterized by the above-mentioned. 8. The method according to any one of claims 3 to 7, wherein the pair of vertical guide plates is fixed to one side of the trap and the ground, and the horizontal roller is axially secured to the other, and / or the one side of the trap and the ground. And a pair of vertical guide plates fixed thereto, and the trap and / or the base guided in the direction of conveying the object by fixing a horizontal roller on the other side. 9. The power conversion mechanism according to any one of claims 5, 7, and 8, wherein the power conversion mechanism includes a crank arm mounted on a rotation shaft of the rotation drive source, an eccentric shaft mounted eccentrically on the crank arm with the rotation shaft, And a guide member which is pivotally mounted on the eccentric shaft, and a guide member fixed to the trap side to guide the slide in a direction perpendicular to the longitudinal direction of the trap.